CXLB7327 is a complete constant-current/constant voltage linear charger for single cell lithium-ion batteries,specifically designed to work within USB power specifications. No external sense resistor

CXLB7327A is a complete constant-current/constant voltage linear charger for single cell lithium-ion batteries. Furthermore the CXLB7327A is specifically designed to work within USB power specifications. No external sense resistor is needed and no blocking diode is required due to the internal PMOSFET architecture .Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature .The charge voltage is fixed at 4.2V,and the charge current can be programmed externally with a single resistor. The CXLB7327A automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed the CXLB7327A automatically enters a low current state dropping the battery drain current to less than 2μA.The CXLB7327A can be put into shutdown mode reducing the supply current to 55μA. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status.A1M嘉泰姆

●Protection of battery cell reverse connection A1M嘉泰姆

●No MOSFET sense resistor or blocking diode required A1M嘉泰姆

●Complete Linear Charger in ThinSOT Package for Single Cell Lithium-Ion Batteries A1M嘉泰姆

●Constant-Current/Constant-Voltage operation with thermal regulation to maximize Rate Without risk of overheating. A1M嘉泰姆

● Preset 4.2V charge voltage with ±1% accuracy A1M嘉泰姆

● Automatic Recharge A1M嘉泰姆

●Charges Single Cell Li-Ion Batteries Directly from USB Port A1M嘉泰姆

●C/10 charge termination A1M嘉泰姆

● 55μA supply current in shutdown A1M嘉泰姆

● 2.9V trickle current charge threshold A1M嘉泰姆

● Soft-Start limits inrush current A1M嘉泰姆

●Charge Status Output Pin A1M嘉泰姆

●Available in SOT23-5 PackageA1M嘉泰姆

●Cellular Telephones, PDAs, MP3 Players A1M嘉泰姆

●Charging Docks and Cradles A1M嘉泰姆

●Bluetooth ApplicationsA1M嘉泰姆

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Li-ion   Battery Charger(锂电池充电芯片)
Part Number	VFLOAT	VIN	Max Charger	Charger	Accu.	IQ	Package
				Type
CXLB7326	4.2V	4.25-6.5V	800mA	Linear	±1%	25uA	SOT23-5
CXLB7327	4.2V	4.25-6.5V	800mA	Linear	±1%	55uA	SOT23-5
CXLB7328	4.2V	4.25-6.5V	800mA	Linear	±1%	55uA	SOT23-5
CXLB7329	4.2V	4.25-6.5V	800mA	Linear	±1%	55uA	SOT23-6
CXLB7330	4.2V/4.34V	4.25-6.5V	1000mA	Linear	±1%	55uA	ESOP8
CXLB7331	4.2V/4.34V	4.25-6.5V	1000mA	Linear	±1%	55uA	ESOP8
CXLB7332	8.4V/8.7V	4.7-20V	2000mA	Switch	±1%	10uA	SOP8
CXLB7333	4.2V/4.34V	4.7-5.5V	2000mA	Switch	±1%	1uA	ESOP8
Applications：①Mobile phone②MID③PDA④Battery   Charger⑤Bluetooth equipment